# Study sets matching "statistics chapter 4"

Study sets

Classes

Users

Bi-variate Data

Response Variable

Explanatory/Predictor Variable

Scatter Diagram

Data in which two variables are measured on an individual

The variable whose value can be explained by the value of the…

The variable whose value explains the response variable

A graph that shows the relationship between two quantitative v…

Bi-variate Data

Data in which two variables are measured on an individual

Response Variable

The variable whose value can be explained by the value of the…

Event

Simple Event

Sample Space

P

any collection of results or outcomes of a procedure

an outcome or an event that cannot be further broken down into…

for a procedure consists of all possible simple events; that i…

denotes a probability.

Event

any collection of results or outcomes of a procedure

Simple Event

an outcome or an event that cannot be further broken down into…

Experiment

Sample space

Tree diagram

Event

An activity in which there are at least two possible outcomes…

S': a listing of all possible outcomes, using set notation

A visual road map of possible outcomes in an experiment

Any collection of outcomes from an experiment

Experiment

An activity in which there are at least two possible outcomes…

Sample space

S': a listing of all possible outcomes, using set notation

comparison test for linear correlation

correlation coefficient

scatterplot

response variable

helps determine whether the correlation coefficient is strong…

measures the strength of the linear association between two va…

plot of the values of y, the response variable, vs the corresp…

y variable in regression analysis; dependent; outcome

comparison test for linear correlation

helps determine whether the correlation coefficient is strong…

correlation coefficient

measures the strength of the linear association between two va…

Population

Sample

Sample Survey

Convenience Sample

The ... in a statistical study is the entire group of individu…

A subset of individuals in the population from which we actual…

A study that uses an organized plan to choose a sample that re…

Choosing individuals from the population who are easy to reach…

Population

The ... in a statistical study is the entire group of individu…

Sample

A subset of individuals in the population from which we actual…

Population

Sample

Sample survey

Convenience sample

in a statistical study is the entire group of individuals abou…

is the part of the population from which we actually collect i…

A study that asks questions of a sample drawn from some popula…

choosing individuals who are easiest to reach.

Population

in a statistical study is the entire group of individuals abou…

Sample

is the part of the population from which we actually collect i…

Bayes Theorem

Multiplication of Probabilities(And)

Addition of Probablilities(Or)

Mutually Exclusive events

Based on conditions that might be related to the event. P(A|B)…

N means multiply

U means add

Bayes Theorem

Based on conditions that might be related to the event. P(A|B)…

Multiplication of Probabilities(And)

N means multiply

Bias

Census

Cluster sample

Convenience sample

The design of a statistical study shows bias if it systematica…

A study that attempts to collect data from every individual in…

To take a cluster sample, first divide the population into sma…

A sample selected by taking the members of the population that…

Bias

The design of a statistical study shows bias if it systematica…

Census

A study that attempts to collect data from every individual in…

scatterplot

positive linear relationship

negative linear relationship

no apparent relationship

a graph of points (X.,Y) each of which ... represent one observa…

X increases, y also tends to increase

X increases, Y tend to decease

X increases , Y tends to remain unchanged

scatterplot

a graph of points (X.,Y) each of which ... represent one observa…

positive linear relationship

X increases, y also tends to increase

Population

Sample

Sample survey

Convenience sample

in a statistical study is the entire group of individuals abou…

is the part of the population from which we actually collect i…

A study that asks questions of a sample drawn from some popula…

choosing individuals who are easiest to reach.

Population

in a statistical study is the entire group of individuals abou…

Sample

is the part of the population from which we actually collect i…

Population

Sample

Sample Survey

Convenience Sample

The entire group of individuals about which we want information

The part of the population from which we actually collect info…

A survey which is carried out using a sampling method, i.e. in…

Choosing individuals who are easiest to reach...almost guarant…

Population

The entire group of individuals about which we want information

Sample

The part of the population from which we actually collect info…

Population

Sample

Sample Survey

Convenience Sample

The entire group of individuals we want to know about. For exa…

A subset of individuals in the population from which we actual…

Sample survey is a study in which you obtain data from a subse…

Choosing individuals from the population who are easy to reach…

Population

The entire group of individuals we want to know about. For exa…

Sample

A subset of individuals in the population from which we actual…

Random Variable

Discrete

Continuous

Discrete probability distribution

x represents a numerical value associated with each outcome of…

A variable is discrete if it has finite or countable number of…

If the variable has an uncountable number of possible outcomes…

Lists each possible value the random variable can assume, toge…

Random Variable

x represents a numerical value associated with each outcome of…

Discrete

A variable is discrete if it has finite or countable number of…

Random Variable

A random variable is ________ if its po…

A random variable is _________ if its p…

Probability distribution

a numerical variable associated with the outcomes of a random…

discrete

continuous

of a discrete random variable x is a list (or description) of…

Random Variable

a numerical variable associated with the outcomes of a random…

A random variable is ________ if its po…

discrete

Probability

Experiment

Sample Point

Sample Space

numerical measure of the likelihood that an event will occur

a process that generates well-defined outcomes

an element of the sample space. A ______ _____ represents an e…

the set of all experimental outcomes

Probability

numerical measure of the likelihood that an event will occur

Experiment

a process that generates well-defined outcomes

Sampling errors

Random sampling error

Nonsampling errors

Undercoverage

are errors caused by the act of taking a sample. They cause sa…

is the deviation between the sample statistic and the populati…

are errors not related to the act of selecting a sample from t…

occurs when some groups in the population are left out of the…

Sampling errors

are errors caused by the act of taking a sample. They cause sa…

Random sampling error

is the deviation between the sample statistic and the populati…

Probability

What are ALWAYS the Probability values…

The Probability assigned to each experi…

Zero < P(E i) <1 for all i

Numerical measure of the likelihood that an event will occur,…

Zero to One.

Zero to One inclusively.

E i is the i th experimental outcome... P(E i) is its probability

Probability

Numerical measure of the likelihood that an event will occur,…

What are ALWAYS the Probability values…

Zero to One.

Bias

Census

Cluster sample

Convenience sample

The design of a statistical study shows bias if it systematica…

A study that attempts to collect data from every individual in…

To take a cluster sample, first divide the population into sma…

A sample selected by taking the members of the population that…

Bias

The design of a statistical study shows bias if it systematica…

Census

A study that attempts to collect data from every individual in…

What is the population in a statistical…

What is the sample in a statistical stu…

What is a convenience sample, and why i…

What is a bias?

the entire group of individuals about which we want information

part of the population from which we actually collect informat…

choosing individuals who are easiest to reach results. However…

design of a statistical study that systematically favors certa…

What is the population in a statistical…

the entire group of individuals about which we want information

What is the sample in a statistical stu…

part of the population from which we actually collect informat…

Bias

Census

Cluster sample

Convenience sample

When a statistical study systematically favors certain outcome…

A study that attempts to collect data from every individual in…

To take a cluster sample, first divide the population into sma…

A sample selected by taking the members of the population that…

Bias

When a statistical study systematically favors certain outcome…

Census

A study that attempts to collect data from every individual in…

Boxplot

Deviation

Dispersion

Interquartile range

A graph that presents information about the central tendency a…

The distance between the score and the mean

The amount of variety, or heterogenicity, in a distribution of…

The distance from the third quartile to the first quartile

Boxplot

A graph that presents information about the central tendency a…

Deviation

The distance between the score and the mean

Population

Sample

Sample Survey

Convenience Sample

The entire group of individuals about which we want information

The part of the population from which we actually collect info…

A survey which is carried out using a sampling method, i.e. in…

Choosing individuals who are easiest to reach...almost guarant…

Population

The entire group of individuals about which we want information

Sample

The part of the population from which we actually collect info…

Mean

Median

Mode

Range

average; is computed by summing the observations and dividing…

the observation that falls in the middle. it's calculated by p…

the observation that occurs with the greatest frequency

= Largest observation- Smallest observation

Mean

average; is computed by summing the observations and dividing…

Median

the observation that falls in the middle. it's calculated by p…

Experiment

Outcomes

Sample space

Tree Diagram

A process that, when performed, results in one and only one of…

These observations are called the outcomes of the experiment.

The collection of all outcomes for an experiment is called a s…

Experiment

A process that, when performed, results in one and only one of…

Outcomes

These observations are called the outcomes of the experiment.